The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2011
Filed:
Aug. 25, 2008
Planetary transmission having common carrier for generating six forward and two reverse drive ratios
John William Kimes, Wayne, MI (US);
Mark William Rosselot, Saline, MI (US);
Gregory Daniel Goleski, Rochester Hills, MI (US);
Gregory Dean Gardner, Livonia, MI (US);
John William Kimes, Wayne, MI (US);
Mark William Rosselot, Saline, MI (US);
Gregory Daniel Goleski, Rochester Hills, MI (US);
Gregory Dean Gardner, Livonia, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
An automatic transmission includes a first planetary gearset having a first planet pinion set rotatably supported on a common carrier and drivingly engaged with a first sun gear and a first composite gear that acts both as a first ring gear and a second sun gear. A second planetary gearset includes a second planetary pinion set rotatably supported on the common carrier and drivingly engaged with a third sun gear, the first composite gear and a second composite gear that acts both as a second ring gear and a third ring gear. A third planetary gearset has a third planet pinion set rotatably supported on the common carrier and drivingly engaged with a third sun gear and the second composite gear. A series of nested clutches and multiple bakes are employed to establish six forward speed ratios and one reverse ratio using a single carrier.